import React, {useState} from 'react'
import { Navigate } from 'react-router-dom'

export default function Home() {

  const [sum, setSum] = useState(1)

  return (
    <div>
      <h3>我是Home的内容</h3>
      {sum === 2 ? <Navigate to='/about' replace/> :<h4>当前sum的值是：{sum}</h4>}
      <button onClick={()=>{setSum(2)}}>点我将Sum变为2</button>
    </div>
  )
}
